Pulmonary Artery Aneurysm Management Strategies

Pulmonary artery aneurysms (PAAs) represent a rare but potentially life-threatening dilatation of the pulmonary arterial system. Etiologies encompass congenital heart disease, connective tissue disorders, pulmonary hypertension, infection and trauma. Management hinges on risk stratification of rupture, haemodynamic stability and underlying pathology. Conservative surveillance with serial imaging and optimisation of comorbidities is appropriate for small, asymptomatic aneurysms. Endovascular techniques, notably coil or plug embolisation and vascular occlusion, offer minimally invasive options for high-risk lesions or pseudoaneurysms presenting with haemoptysis. Surgical reconstruction or graft replacement remains the definitive intervention for large central aneurysms, those at imminent risk of rupture, or when endovascular access is unfeasible. Cross-disciplinary collaboration between pulmonologists, interventional radiologists, cardiothoracic surgeons and intensivists underpins decision-making. Advances in imaging modalities, including high-resolution computed tomography angiography and three-dimensional reconstructions, have enhanced diagnostic accuracy and procedural planning. Despite growing case series and institutional experiences, standardised size or pressure thresholds for intervention are still evolving, underscoring the need for multicentre registries and consensus guidelines.

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Pulmonary Artery Aneurysm Management Strategies publication trend

The graph below shows the total number of articles in pulmonary artery aneurysm management strategies across all publications each year (not limited to Nature Index journals).

Technical terms

Pulmonary artery aneurysm: A focal dilatation of the pulmonary arterial wall involving all three layers, exceeding normal calibre by 50 per cent or more.

Pseudoaneurysm: A contained rupture of the arterial wall in which blood is held by surrounding tissues, lacking one or more layers of the vessel wall.

Endovascular embolization: A minimally invasive procedure using coils, plugs or liquid agents to occlude blood flow within an aneurysm or feeding vessel.

Haemoptysis: Expectoration of blood originating from the lower respiratory tract, often a presenting symptom of pulmonary vascular lesions.

Computed tomography angiography: A contrast-enhanced imaging technique that visualises vascular anatomy and pathology with high spatial resolution.

Pulmonary hypertension: Elevated mean pulmonary arterial pressure, commonly defined as ≥ 25 mmHg at rest on invasive measurement, contributing to vessel wall stress.

References

1. Pulmonary Artery Pseudoaneurysms Embolization: Bicentric Experience and Review of the Literature. Journal of Clinical Medicine (2023).
2. Clinical and radiological features associated with rupture of pulmonary artery pseudoaneurysm: a retrospective study. BMC Pulmonary Medicine (2024).
3. Endovascular treatment for massive haemoptysis due to pulmonary pseudoaneurysm: report of 23 cases. Journal of Cardiothoracic Surgery (2023).